FLUGZEIT-MASSENSPEKTROMETER MIT EINEM IONENREFLEKTOR.

摘要

The mass spectrometer timing the flight paths uses a reflector to guide ions from an ion source towards a detector. Incoming ions (35) pass through two spaced apart ring shaped braking electrodes (27,28) and a ring shaped focussing electrode (30) before approaching the reflector electrode (29). Between the focussing and reflecting electrodes (30,29) are three spaced apart ring shaped linearising electrodes (20,21,22). The front electrode (27) has a larger hole diameter than the braking electrode (28). The focussing electrode (30) is at a higher potential than the linear increase in potential between the braking electrode and reflector electrode.